Save your money there is nothing wrong with the resistor, they run dam hot that's why they are mounted in a ceramic cube.
If it gets to 220 at idle in your garage you have other issues, no wonder it is stalling out on the road.
It may have been closer to 210 degrees looking back at the picture I took right before turning the car off and the one I posted. My temp guage in the car wasn't even to the half way mark yet. Normal driving it is usually around 190-200 degrees. It has a brand new cooling system.... WP, hoses, Cold Case radiator, transmission cooler and thermostat... It was much hotter in the garage than it was outside the garage.
Also the car usually dies/starts to die when I am sitting at a stop light.
